1、NSF International Standard / American National StandardNSF/ANSI 62 - 2017Drinking Water Distillation SystemsNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global supplier of public health and safety-based risk management services s
2、erving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may request clarifications and interpretations, or propose revisions by contacting: Chair, Joint Committee on Drinking Water Treatment Units c/o NSF
3、 International 789 North Dixboro Road, P. O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.org i NSF/ANSI 62 2017 NSF International Standard/ American National Standard for Drinking Water Treatmen
4、t Units Drinking water distillation systems Standard Developer NSF International Designated as an ANSI Standard June 13, 2017 American National Standards Institute ii Prepared by The NSF Joint Committee on Drinking Water Treatment Units Recommended for Adoption by The NSF Council of Public Health Co
5、nsultants Adopted by The NSF Board of Directors May 1989 Revised November 1992 Revised February 2012 Revised September 1997 Revised December 2013 Revised September 1999 Revised January 2015 Addendum, June 2002 Revised October 2015 Revised February 2004 Revised November 2016 Revised October 2007 Revi
6、sed November 2017 Revised August 2009 Published by NSF International P. O. Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please refer to the designation “NSF/ANSI 62 2017.” Copyright 2017 NSF International Previous edition 2
7、016, 2015, 2014, 2013, 2012, 2009, 2007, 2004, 1999, 1997, 1992, 1989 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF Internationa
8、l. Printed in the United States of America. iii Disclaimers1NSF, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. N
9、SF shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. NSF Standards
10、provide basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements. Participation in NSF
11、Standards development activities by regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsement of NSF or any of its Standards. Preference is given to the use of performance criteria measurable by examination or testing in NSF Standards development when s
12、uch performance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for a specific product or
13、unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall not be used to justify improper or incomplete design and construction. Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as gener
14、al guidelines to the manufacturer, regulatory agency, user, or certifying organization.1The information contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Disclaimer may contai
15、n material that has not been subjected to public review of a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.v Contents 1 General . 1 1.1 Scope . 1 1.2 Minimum requirements. 1 1.3 Chemical and microbiol
16、ogical reduction performance claims 1 1.4 Treatment train . 1 1.5 Reviews and revisions . 1 2 Normative references . 2 3 Definitions . 2 4 Materials . 2 4.1 Materials in contact with drinking water . 2 4.2 Materials evaluation . 3 4.3 Gas chromatography/mass spectroscopy (GC/MS) analysis 5 5 Structu
17、ral performance . 11 5.1 Structural integrity 11 6 Minimum performance requirements 15 6.1 Total dissolved solids (TDS) reduction 15 6.2 Performance indication 19 6.3 Flow control 23 6.4 Storage tanks . 23 6.5 Evaporator chamber . 23 6.6 Openings and rims (product water zone) . 23 6.7 Entry ports 23
18、 6.8 Waste connections . 23 6.9 Product water dispensing outlets . 23 6.10 Active agents and additives . 24 7 Elective performance claims test methods 24 7.1 Inorganic chemical reduction claims qualified by TDS surrogate testing 24 7.2 Inorganic chemical reduction . 24 7.3 In-place sanitization of t
19、he product water zone . 28 7.4 Microbiological reduction 30 7.5 Production rate verification 32 8 Instruction and information . 34 8.1 Installation, operation, and maintenance instructions 34 8.2 Data plate . 35 8.3 Replacement components . 36 8.4 Performance data sheet . 36 Annex A Evaluation of to
20、tal dissolved solids as a surrogate parameter for the reduction of inorganic contaminants by distillation systems . 41 Annex B Key elements of a certification program for drinking water treatment systems and components 47 Annex C. 51 Annex D Evaluation methods for systems with multiple technologies
21、- treatment train . 53 This page is intentionally left blank.vii Foreword2The purpose of this Standard is to establish minimum requirements for the materials, design and construction, and performance of point-of-use and point-of-entry drinking water distillation systems that are designed to reduce s
22、pecific chemical and microbiological contaminants in public or private water supplies. NSF/ANSI 62 also specifies minimum product literature requirements that manufacturers must provide to authorized representatives and consumers. Water contact materials in drinking water treatment units listed unde
23、r NSF/ANSI 42, 44, 53, 55, 58, and 62 are tested and evaluated under a separate protocol from NSF/ANSI 61, with criteria that were developed specifically for the intended end-use. NSF/ANSI 61 listing should not be additionally required for acceptance of these listed units for water contact applicati
24、on. This edition of the Standard contains the following revisions: Issue 32 Normative references were updated. Issue 33 The component burst pressure test was removed from section 5. Issue 34 Evaluation criteria columns from tables 4.1, 4.2, and 4.3 were removed and now reference the evaluation crite
25、ria in Annex D, Table D.1 in NSF/ANSI 61. Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous Maintenance schedule and can be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Drinking Water Treatment Units at stand
26、ardsnsf.org, c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, thi
27、s Foreword may contain material that has not been subjected to public review of a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.1 2017 NSF NSF/ANSI 62 2017 NSF/ANSI Standard for Drinking Water Treatme
28、nt Units Drinking water distillation systems 1 General 1.1 Scope This standard establishes minimum materials, design and construction, and performance requirements for point-of-use and point-of-entry drinking water distillation systems and the components used in these systems. Distillation systems c
29、overed by this standard are designed to reduce specific chemical contaminants from potable drinking water supplies. Systems covered under this standard may also be designed to reduce microbiological contaminants, including bacteria, viruses, and cysts, from potable drinking water supplies. It is rec
30、ognized that a system may be effective in controlling one or more of these contaminants, but systems are not required to control all. Systems covered by this standard are not intended for the treatment of water that is visually contaminated (turbid) or has an obvious contamination source, such as ra
31、w sewage, nor are systems covered by this standard intended to convert wastewater to microbiologically potable water. 1.2 Minimum requirements A system as defined in this standard shall meet the applicable requirements of Sections 4, 5, 6, and 8. A component as defined in this standard shall meet th
32、e requirements of 4 and 8. If the component is pressure bearing, it shall also meet the applicable requirements of 5. 1.3 Chemical and microbiological reduction performance claims 1.3.1 All NSF/ANSI 62 performance claims shall be verified and substantiated by test data generated under the requiremen
33、ts of NSF/ANSI 62. 1.3.2 When performance claims are made for substances not specifically addressed in the scope of this Standard or for those substances not specifically addressed but falling under the scope of NSF/ANSI 62, those claims not specifically addressed in the Standard shall be so identif
34、ied. 1.4 Treatment train A system that contains multiple, sequential treatment technologies for a performance claim under this Standard shall meet the applicable requirements as described in Annex D. 1.5 Reviews and revisions This Standard shall be reviewed at least every five years. The review is t
35、o be conducted by the NSF Joint Committee on Drinking Water Treatment Units. 2017 NSF NSF/ANSI 62 2017 2 2 Normative references The following documents contain requirements which, by reference in this text, constitute requirements of this standard. At the time of publication, the indicated editions
36、were valid. All standards are subject to revision and parties are encouraged to investigate the possibility of applying the recent editions of the standards indicated below. The most recent published edition of the document shall be used for undated references. 21 CFR . Parts 170-199. Food and Drugs
37、3NSF/ANSI 61 Drinking water system components Health effects APHA, Standard Methods for the Examination of Water and Wastewater, twentieth edition, 19984USEPA600/4-79-020, Methods for the Chemical Analysis of Water and Wastes, March 19835USEPA-600-4-84-053, Methods for Organic Chemical Analysis of M
38、unicipal and Industrial Wastewater, June 19845USEPA600/4-88/039, Methods for the Determination of Organic Compounds in Drinking Water, December 19885USEPA-600/4-90/020, Methods for the Determination of Organic Compounds in Drinking Water -Supplement 1, July 19905USEPA600/4-91/010, Methods for the De
39、termination of Metals in Environmental Samples, June 19915USEPA National Primary Drinking Water Regulations, 40 CFR Part 1416US EPA National Secondary Drinking Water Regulations, 40 CFR Part 1436USEPA National Secondary Drinking Water Regulations, 56 CFR Part 357363 Definitions Terms used in this St
40、andard that have a specific technical meaning are defined in NSF/ANSI 330. 4 Materials 4.1 Materials in contact with drinking water 4.1.1 POE drinking water treatment units shall conform to the protocol in NSF/ANSI 61. 4.1.2 POU drinking water treatment units shall conform to the protocol in this se
41、ction. 3USFDA CFR Code of Federal Regulations Title 21 . 4American Public Health Association (APHA), 1015 Fifteenth Street, NW, Washington, DC 20005 . 5US Environmental Protection Agency (USEPA), Environmental Monitoring and Support Laboratory, Cincinnati, OH 45268 . 6Superintendent of Documents, US
42、 Government Printing Office, Washington, DC 20402 . 2017 NSF NSF/ANSI 62 2017 3 4.1.3 Acceptance criteria 4.1.3.1 Materials in contact with drinking water shall not impart levels of target compounds or Tentatively Identified Compounds (TICs) that exceed the Total Allowable Concentration (TAC), Maxim
43、um Contaminant Levels (MCL), or Maximum Acceptable Concentration (MAC) criteria specified in NSF/ANSI 61 Annex D, Table D1. Any extractable contaminants not listed in the referenced tables shall be reviewed and shall not exceed criteria developed in accordance with NSF/ANSI 61 Annex A. 4.1.3.2 TIC i
44、dentification and quantitation shall be conducted in accordance with section 4.3.1.2. Additional TIC identification and quantitation should be verified using a standard of the compound in question or an alternate approved analytical method. Additional TIC identification and quantitation is recommend
45、ed when the contaminant is a health risk or when the “Probability Based Matching” process in section 4.3.1.2 is inconclusive. When possible, the product manufacturer should assist and support the testing laboratory in the identification of a standard for the compound and an appropriate analytical me
46、thod, if applicable, so that confirmatory identification and quantification can be performed. If a standard and an adequate alternative analytical method are not available to verify the identification and quantitation of the compound, the TIC shall be evaluated according to section 4.3.1.2. NOTE Man
47、ufacturers may not be privy to formulation information, so they may not be able to assist a testing laboratory to identify a standard for the compound that extracted. Refer to Section 4.3.1.2 when the manufacturer does not have material formulation information. 4.1.3.3 Unknown contaminants detected
48、by GC/MS analysis for which identification is unable to be made after performing the steps in 4.3.1 shall be reported in accordance to 4.1.4.2. 4.1.3.4 The concentration of active agents or additives used in the drinking water treatment process shall be evaluated in the product water as specified in
49、 6.11. The concentration of active agents or additives used in the drinking water treatment process shall not be evaluated during extraction testing. 4.1.3.5 Whole-system or component assembly extraction testing may be waived if components, when separately tested, meet the requirements of this Standard and are assembled in a manner that does not introduce any new components or materials, increase the surface area-to-volume ratio of previously evaluated components, or present potential concern based on cumulative factors. The reported extractable conce
